Unnamed service
GET x402stock.xyz/api/v1/treasury-yields
Why an agent can trust this route.
Sonar evidence is advisory. Paid delivery is shown as verified only when paid probes are available; otherwise route estimates use the unpaid handshake as a clearly labeled proxy.
Observed outcomes
The daily US Treasury par yield curve (Constant Maturity Treasury rates) for every maturity from 1 month to 30 years, in percent. Defaults to the latest published day; pass `?limit=` for more recent days (max 250) and `?year=YYYY`. No ticker needed. Use for the risk-free rate, rate-sensitivity context, and yield-curve inversion in macro-aware analysis. From x402stock
Resource: x402stock.xyz/api/v1/treasury-yields
Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0x3070Fbb3803819fB5BdfE9286fdc6325A877fA85
Payment methods: — · Last validation: 2026-09-14 16:11:58.877+00
{
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"limit"
],
"properties": {
"year": {
"type": "integer",
"maximum": 2100,
"minimum": 1990
},
"limit": {
"type": "integer",
"default": 1,
"maximum": 250,
"exclusiveMinimum": 0
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"source",
"as_of",
"series",
"unit",
"maturities",
"count",
"rates"
],
"properties": {
"unit": {
"type": "string"
},
"as_of": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"count": {
"type": "number"
},
"rates": {
"type": "array",
"items": {
"type": "object",
"required": [
"date",
"rates"
],
"properties": {
"date": {
"type": "string"
},
"rates": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
}
}
},
"additionalProperties": false
}
},
"series": {
"type": "string"
},
"source": {
"type": "string",
"const": "us_treasury"
},
"maturities": {
"type": "array",
"items": {
"type": "string"
}
}
},
"additionalProperties": false
}
}
},
"paymentRequirements": [
{
"raw": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3070Fbb3803819fB5BdfE9286fdc6325A877fA85",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0x3070Fbb3803819fB5BdfE9286fdc6325A877fA85",
"scheme": "exact",
"network": "eip155:8453",
"amountAtomic": "10000"
}
]
}Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.